that is the song of the year, we are young, by the new york city-based group, fun. they were big winners at the grammys last night. >> they took home the best new artist grammy. some of the other winners last night, album of the year, mumford & sons for their album basketball. and gotye, somebody that i used to know won for best record. >> one of the most talked about performances this morning the justin timberlake himself. ♪ ♪ baby if we don't mind all the watching ♪ >> new track, suit, and tie, with jay-z and pusher love. in a performance broadcast in retro black and white. he sounds great as always. >> jennifer lopez chose to ignore the warning about not showing too much skin. she wore a shoulderer-bearing gown. i read the memo, she joked. >> i had no problem with that. no problem with it at all. some rules are meant to be broken. >>> also, katy perry was taking a fashion risk in this seafoam green creation. it also showed off her svelte figure. it was inpyred by a 1970s era priscilla presley. >> that is a beautiful dress. >> yes, they are. >> it's a nice d